Five exercises, one minute each ... All right, now we're going to go on to the vertical leg crunch. Same position, but with your legs in the air. Just crunch up nice and slow.

The reverse crunch is a simple core exercise that targets those hard-to-hit lower abs — without straining your neck and back.

Flutter Kicks (Vertical Scissors ... V-Sit: Similar to a traditional crunch, but with a key difference: you'll keep your legs elevated throughout the exercise. Flex your core to lift the upper ...

If the idea of spending hours (and hours) in the gym completing sit-ups, crunches and planks leaves you sweating at the thought of it, then this six-minute ab workout will be a welcomed addition ...